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#pragma once

#include "clangjobqueue.h"

#include <clangsupport/clangcodemodelclientinterface.h>

#include <QFuture>

#include <functional>

namespace ClangBackEnd {

class ClangCodeModelClientInterface;
class Documents;
class IAsyncJob;
class UnsavedFiles;

class Jobs
{
public:
    struct RunningJob {
        JobRequest jobRequest;
        Utf8String translationUnitId;
        QFuture<void> future;
    };

    using RunningJobs = QHash<IAsyncJob *, RunningJob>;
    using JobFinishedCallback = std::function<bool(RunningJob, IAsyncJob *)>;

public:
    Jobs(Documents &documents,
         UnsavedFiles &unsavedFiles,
         ClangCodeModelClientInterface &client,
         const Utf8String &logTag = Utf8String());
    ~Jobs();

    JobRequest createJobRequest(const Document &document, JobRequest::Type type,
                                PreferredTranslationUnit preferredTranslationUnit
                                    = PreferredTranslationUnit::RecentlyParsed) const;

    void add(const JobRequest &job);
    void add(const Document &document,
             JobRequest::Type type,
             PreferredTranslationUnit preferredTranslationUnit
                 = PreferredTranslationUnit::RecentlyParsed);

    JobRequests process();
    JobRequests stop();

    JobFinishedCallback finishedCallback() const;
    void setJobFinishedCallback(const JobFinishedCallback &jobFinishedCallback);

public /*for tests*/:
    QList<RunningJob> runningJobs() const;
    JobRequests &queue();
    const JobRequests &queue() const;
    bool isJobRunningForTranslationUnit(const Utf8String &translationUnitId) const;
    bool isJobRunningForJobRequest(const JobRequest &jobRequest) const;
    JobFinishedCallback jobFinishedCallback() const;

private:
    JobRequests runJobs(const JobRequests &jobRequest);
    bool runJob(const JobRequest &jobRequest);
    void onJobFinished(IAsyncJob *asyncJob);

private:
    Documents &m_documents;
    UnsavedFiles &m_unsavedFiles;
    ClangCodeModelClientInterface &m_client;
    Utf8String m_logTag;

    JobQueue m_queue;
    RunningJobs m_running;
    JobFinishedCallback m_jobFinishedCallback;
};

} // namespace ClangBackEnd